1.It seems that your sister has fallen in love with that guy.

A.sees

B.seeks

C.looks at

D.appears

正確答案：D

2.The wolf is approaching the little sheep which is not aware of the danger.

A.watching

B.eating

C.observing

D.getting close to

正確答案：D

3.He decided to accept this tough task.

A.hard

B.rough

C.complicated

D.simple

正確答案：A

4.Only a small minority of the mentally ill are liable to harm themselves or others.

A.easy

B.possible

C.likely

D.difficult

正確答案：C

5.They have the capability to destroy the enemy in a few days.

A.possibility

B.necessity

C.ability

D.probability

正確答案：C